Jacquard apparatus.



PAT'ENTED NOV. 8, 1904.

B. S. SMITH;

JACQUARD APPARATUS.

APPLICATION FILED JULY 23, 1903.-

N0 MODEL.

Patented November 8, 1904:.

PATENT @Tricn.

BENJAMIN SINCLAIR SMITH, OF PAISLEY, SCOTLAND.

JACQUARD APPARATUS.

SPECIFICATION forming par of Le r Pa en N 774,610, dated November 8,1904.

Application filed July 28, 1903- Serial No. 167,346. (No model.)

To all whom, it may concern.-

Be it known that I, BENJAMIN SINCLAIR SMITH, a subject of the King ofthe United Kingdom of Great Britain and Ireland, residing at StonefleldMills, Paisley, Renfrewshire, Scotland, have invented certain new anduseful Improvements in Jacquard Apparatus for Looms, of which thefollowing is a specification.

This invention relates to jacquard apparatus for looms, adapted to somanipulate the warps in a loom for weaving pile fabrics that a doublefabric is formed comprising two carpets woven face to face in which thepile-warps pass from the upper cloth to the lower cloth, as required bythe design, and when not required are floated between the fabrics.

The invention resides more especially in the disposition of the knotsrelative to the boards and in the arrangement of the boards for lifting,retaining, and lowering the knotted cords connected to the warps, therebe ing provided a stationary board to hold up the lower series of knots,so that the warps connected to the cords are in a floating position, anintermediate lift-board which lifts the upper knots of the selectedcords and retains them momentarily in raised position, so as to raisethe corresponding warp-threads to the top cloth, to be there woven, anda top lift-board which is lowered to allow the lower knots of the cordsnot selected to rest on the bottom board, while on the intermediateboard descending the, selected cords are lowered to lower the warpsconnected thereto to the bottom cloth and are again lifted to thefloating position when the top board is raised.

The invention is illustrated in the accompanying drawings, inwhichFigure 1 shows the improved jacquard in diagrammatic form, the detailsof the apparatus being omitted. Fig. 2 is a diagram showing thelifting-boards and the knotted cords in different positions.- Fig. 3shows a cross-section of the fabric produced in which a is the top clothand b is the bottom cloth, while 0 represents the weft-shots in eachinterwoven with the warp-threads d, which threads (Z cross from the topcloth to the bottom cloth, and vice versa, and which threads when notrequired for the design float between the cloths, the said warps beingsevered subsequent to the weaving operation in order to form twocarpets, one from the top cloth a and the other from the bottom clothI). Fig. 4 is a detail view showing the liftingboards. a

The improved jacquard as regards the so raise the cords 2' that thebottom knots t" are all above the stationary board it, through whichboard it pass the-cords to the usual mails in the warps below. In thisposition the card on the card-cylinder f is pressed into contact withthe ends of the needles g, so as to act on certain of said needlesaccording to the pattern and to deflect the corresponding cords. Thejacquard lift board Z is then raised to the position shown in Fig. 1,lifting with it, by the knots 6 the cords 2', that have been selected bythe card on the cardcylinder f, up to the full-lift, so that thepilewarps attached to said cords are raised to the back of the top clotha in the loom. While the lift-board Z so retains these warps, the toplift-board it is lowered, leaving the cords t' andknots i" not selectedby the card on the stationary board it, the pile-warps attached to thesecords being heldfloating between the top cloth and the bottom cloth inthe manner indicated at Fig. 3. This completes the first cycle ofoperations. In the second cycle the jacquard lift-boardZ is lowered sothat the selected cords, with the knots 11 which had raised the selectedpile warps to the top cloth, are lowered, together with thecorresponding knots f, as indicated at Fig. 2, to lowerthese warps downto the bottom cloth, in which they are woven. For this purpose the tailsa and m in the boards Z and 76, respectively, run in oppositedirections. WVhen this has taken place, the top lift-board it is raisedso as to bring all the pile-warps to float midway be tween the twocloths a and b, and all the knots z" are raised above the stationaryboard 71;, while the knots d are all hanging in position ready forrepeating the first cycle of operations, when a fresh card on thecylinder f is brought to act on the needles and the lift-board Z israised.

The difference between the present jacquard apparatus and thoseheretofore known is realized partly from the feature that under thisinvention the warps not selected by the loom float between the top andbottom cloths, both of which are woven as pile carpets figured on bothsides. Such a fabric figured on both sides is of quality resembling thatof the usual hand-tufted carpet, while in the manufacture, on account ofthe figure showing on the upper face of the top cloth, the weaver canreadily discern whether any of the warp-threads have become accidentallybroken. in the manufacture of duplex-pile fabrics as heretoforepracticed the warp-threads not selected by the jacquard were taken intoeither the top or the bottom cloth, so that a figure was formed on oneside only of each carpet, and it was difficult or impossible todetermine if any of the warp-threads were broken or otherwise.

Having now described my invention, what I claim, and desire to secure byLetters Patent of the United States, is-

In jacquard apparatus of the class set forth, the combination With theusual needles and cards, of cords arranged to be deflected by saidneedles, said cords having each two knots 27, 23 for cooperation withtwo boards, a stationary bottom board it to hold up the lower series ofknots 2 so that the warps connected to the corresponding cords arefloating between the two cloths, an intermediate movable lift-board Zadapted to lift the upper knots of the selected cords through a distancesufficient to raise the corresponding warps into the upper cloth of thefabric and adapted to momentarily retain said selected cords in raisedposition, a movable top lift-board h and an arm j for lowering andraising said top board it, said board it having a downward movement sothat the lower knots 2 of the cords not selected by the jacquard rest onthe stationary bottom board is, said intermediate board Zreceiving adownward movement sufficient to lower the selected warps into the bottomcloth, and said top board 7t having also an upward movement sufficientto raise all the warps to floating position, whereby a double-pilefabric is produced both of which fabrics are figured upon both sidesthereof and the warps not selected float between the two fabrics,substantially as and for the purpose described.

In testimony whereof I have signed my name to thisspecification in thepresence of two subscribing witnesses.

BENJAMIN SINCLAIR SMITH.

WVitnesses:

WALLAGE CRANsToN FAIRWEATHER, J AMES WRIGHT.

